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SX1230
Integrated Transmitter IC
ADVANCED COMMUNICATIONS & SENSING
DATASHEET
Addr.
0x0A
Register Name
PllStat
Default
0x10
Bits
7:6
Variable Name
-
Mode
r
unused
Description
5
pll_lock_detect
r
PLL lock status:
0 = PLL not locked
1 = PLL locked
4
pll_cal_done
r
PLL calibration status
0 = Calibration on-going
1 = Calibration performed
Note: Reset to 0 in sleep mode irrespective of
calibration state.
3
pll_cal_ok
r
PLL Calibration Result
0 = Calibration procedure failed
1= Calibration procedure successful
Note: Reset to 0 in sleep mode irrespective of
calibration state
2
1:0
pll_cal_start
pll_divr(1:0)
w
rw
Triggers PLL calibration, always read as 0.
PLL division ratio
00 = Automatic
Others, PLL divider = PLL_divr
0x0B
VcoCtrl1
NA
7:5
-
r
unused
4:0
SB1(4:0)
rw
VCO band first calibration value
0x0C
VcoCtrl2
NA
7:5
-
r
unused
4:0
SB2(4:0)
rw
VCO band second calibration value
0x0D
VcoCtrl3
NA
7:5
-
r
unused
4:0
SB3(4:0)
rw
VCO band third calibration value
0x0E
VcoCtrl4
NA
7:5
-
r
unused
4:0
SB4(4:0)
rw
VCO band fourth calibration value
0x0F
ClockCtrl
0x05
7:4
-
r
unused
3
rc_enable
rw
Enables RC oscillator. RC oscillator is also
automatically switched on in E 2 PROM mode.
0 = RC oscillator off
1 = RC oscillator on
2:0
clkout_select
rw
Selects CLKOUT source:
000 = f XOSC (32 MHz)
001 = f XOSC / 2 (16 MHz)
010 = f XOSC / 4 (8 MHz)
011 = f XOSC / 8 (4 MHz)
100 = f XOSC / 16 (2 MHz)
101 = f XOSC / 32 (1 MHz) (d)
110 = RC clock (65 kHz)
111 = Clock output off.
Note: Switching from RC to f XOSC or vice versa
can generate glitches
SX1230, Revision 2 May 2009
?2008 Semtech Corp.
Page 24
www.semtech.com
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